Micro-bits of expanded flexible polyurethanes
US4200679A · kind A · utility
14Cited by
6References
6Claims
0Family size
Inventor
Key dates
| Filing date | Sep 15, 1977 |
| Grant date | Apr 29, 1980 |
| Priority date | — |
| Expiry date | Sep 15, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A polyurethane structure prepared by the comminution of a flexible polyurethane foam in the presence of a compatible protective cooling fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.